Vauxhall Vectra 1.9 CDTi 16v 150hp Remap

The Vauxhall Vectra 1.9 CDTi 16v 150hp is a 1.9L turbocharged diesel engine producing 150 BHP and 320 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 190 BHP and 400 Nm — a gain of around 40 BHP (27%) and 80 Nm (25%).

This engine scores highly for remap suitability, with a balanced spread of gains across both power and torque — providing a noticeable improvement across the rev range. The tuning headroom is classified as high, based on the percentage gain available from the factory output.

Considerations: Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.

Fuel economy note: possible improvement with conservative driving.

All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.